Atypical Presentation of Dengue Fever in qn Older Person: Case Report
- Author:
Zin Mar Tun
;
Shyh Poh Teo
- Publication Type:Case Reports
- Keywords:
aged;
dengue fever;
leukopenia;
thrombocytopenia
- From:
Pacific Journal of Medical Sciences
2026;27(2):63-68
- CountryPapua New Guinea
- Language:English
-
Abstract:
Dengue is an increasingly common infection among older adults, whose presentations are often atypical
and easily misattributed to other causes of fever. We report the case of a 72-year-old man who presented
with a short history of intermittent fever, lethargy and increased urinary frequency, initially treated as a
suspected urinary tract infection. Laboratory investigations showed leucopenia, thrombocytopenia and
mild anaemia. Urinalysis and cultures were negative. Dengue NS1 antigen testing confirmed the
diagnosis. During the admission, the patient developed marked thrombocytopenia but did not progress
to plasma leakage, bleeding, organ impairment or shock. He was managed with careful supportive care
and frequent monitoring, recovering fully by Day 10 of admission. This case highlights the diagnostic
challenges of dengue in older adults, whose altered physiological responses may mask classical features
such as myalgia, rash and haemorrhagic manifestations.
